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<pre><span class="sourceLineNo">001</span>package org.apache.log4j;<a name="line.1"></a>
<span class="sourceLineNo">002</span><a name="line.2"></a>
<span class="sourceLineNo">003</span>import static org.junit.Assert.assertEquals;<a name="line.3"></a>
<span class="sourceLineNo">004</span>import static org.junit.Assert.assertNull;<a name="line.4"></a>
<span class="sourceLineNo">005</span><a name="line.5"></a>
<span class="sourceLineNo">006</span>import java.util.Random;<a name="line.6"></a>
<span class="sourceLineNo">007</span><a name="line.7"></a>
<span class="sourceLineNo">008</span>import org.junit.Test;<a name="line.8"></a>
<span class="sourceLineNo">009</span>import org.slf4j.impl.VersionUtil;<a name="line.9"></a>
<span class="sourceLineNo">010</span><a name="line.10"></a>
<span class="sourceLineNo">011</span>public class MDCFriendTest {<a name="line.11"></a>
<span class="sourceLineNo">012</span><a name="line.12"></a>
<span class="sourceLineNo">013</span>        <a name="line.13"></a>
<span class="sourceLineNo">014</span>    private static Random random = new Random();<a name="line.14"></a>
<span class="sourceLineNo">015</span>        int diff = random.nextInt(1024*8);<a name="line.15"></a>
<span class="sourceLineNo">016</span>        <a name="line.16"></a>
<span class="sourceLineNo">017</span>        @Test<a name="line.17"></a>
<span class="sourceLineNo">018</span>        public void smoke() {<a name="line.18"></a>
<span class="sourceLineNo">019</span>                if(VersionUtil.getJavaMajorVersion() &lt; 9)<a name="line.19"></a>
<span class="sourceLineNo">020</span>                        return;<a name="line.20"></a>
<span class="sourceLineNo">021</span><a name="line.21"></a>
<span class="sourceLineNo">022</span>                MDCFriend.fixForJava9();<a name="line.22"></a>
<span class="sourceLineNo">023</span>                String key = "MDCFriendTest.smoke"+diff;<a name="line.23"></a>
<span class="sourceLineNo">024</span>                String val = "val"+diff;<a name="line.24"></a>
<span class="sourceLineNo">025</span>                MDC.put(key, val);<a name="line.25"></a>
<span class="sourceLineNo">026</span>                assertEquals(val, MDC.get(key));<a name="line.26"></a>
<span class="sourceLineNo">027</span>                MDC.clear();<a name="line.27"></a>
<span class="sourceLineNo">028</span>                assertNull(MDC.get(key));<a name="line.28"></a>
<span class="sourceLineNo">029</span>                <a name="line.29"></a>
<span class="sourceLineNo">030</span>        }<a name="line.30"></a>
<span class="sourceLineNo">031</span><a name="line.31"></a>
<span class="sourceLineNo">032</span>}<a name="line.32"></a>




























































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